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首页> 外文期刊>日本家禽学会誌 >Changes in thickness and weight of shell portion of egg and in weight and size of whole egg during the stay in the uterine part of the oviduct (shell gland) in the guineafowl: comparison with White Leghorn hens
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Changes in thickness and weight of shell portion of egg and in weight and size of whole egg during the stay in the uterine part of the oviduct (shell gland) in the guineafowl: comparison with White Leghorn hens

机译：留在豚鼠输卵管（壳腺）子宫部分期间，鸡蛋的壳部分的厚度和重量以及整蛋的重量和大小的变化：与白来亨鸡的比较

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摘要

The thickness and weight of the shell portion (shell with shell membrane) of eggs at various times during the stay in the uterus and at oviposition were found to be greater in the guineafowl than those in the chicken (White Leghorn). A greater increase in the thickness and weight of the shell portion was found in the guineafowl during the stay in the uterus. The weight of the whole egg at 2 hours of stay in the uterus did not differ between the guineafowl and the chicken. In both the guineafowl andthe chicken, the weight of the whole egg showed an increase at 8 hours of stay and almost no change thereafter. The amount of the increase in the weight of the whole egg was less in the guineafowl than that in the chicken. The size of the egg, as estimated by the length of the long and short axes, showed a minor enlargement at 8 hours of stay in the uterus in the guineafowl, whereas marked enlargement was observed in the chicken at the same time point. These results suggest that (1) the greater thickness and weight of the shell portion in the guineafowl egg is due to a larger amount of minerals deposited on a thicker shell membrane, (2) the size of egg in both the guineafowl and the chicken is determined by 8 hours of stay in the uterus, and (3) the smaller egg size and the smaller amount of albumen in the guineafowl egg is due to less extensive of plumping during the first 8 hours after entering the uterus.
机译：发现在几内亚比的鸡中，在子宫内停留和在排卵时不同时间，卵的壳部分（带有壳膜的壳）的厚度和重量要比鸡（White Leghorn）的厚和重。在停留在子宫的过程中，在豚鼠中发现壳部分的厚度和重量有了更大的增加。豚鼠和鸡在子宫中停留2小时后的全蛋重量没有差异。在豚鼠和鸡中，整个鸡蛋的重量在停留8小时后都增加了，此后几乎没有变化。豚鼠中全蛋重量的增加量少于鸡中全蛋重量的增加量。根据长轴和短轴的长度估算，鸡蛋的大小显示，在豚鼠子宫中停留8小时后，其大小会略有增大，而在同一时间点的鸡中则观察到明显的增大。这些结果表明（1）guineafowl鸡蛋中壳部分的厚度和重量较大是由于大量的矿物质沉积在较厚的外壳膜上;（2）guineafowl和鸡中鸡蛋的大小均为由在子宫中停留8小时来确定;（3）豚鼠卵中较小的卵子大小和较少的蛋白量是由于进入子宫后的前8个小时不那么丰满。

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